iOS Question Scheduling an Application

[db0070]

How do I schedule an application to run after the application is in the background? I am trying to convert my B4A code in which I use a Service to start my application at a selected time.

I tried using local notification as below, but it does not start the application when the app is in the background

Sub btnNotification (alarmTime As Long)
    Dim ln As Notification
    ln.Initialize(alarmTime) 'alarmTime seconds from now
    ln.IconBadgeNumber = 1
    ln.AlertBody = "Alarm Time"
    ln.PlaySound = True
    ln.Register
    hd.ToastMessageShow("Notification will fire in " & alarmTime & " seconds.", False)
End Sub

Sub Application_ReceiveLocalNotification (LN As Notification)
    'this event will fire if the scheduled notification happend when the app was running
    mediaPlayer.showPage
    hd.ToastMessageShow("Notification arrived: " & LN.AlertBody, True)
End Sub

 

[Erel]

It is more or less not possible. What do you need to start it for?

 

[db0070]

At the scheduled time, I want to play the mp3 file that the user had selected, and at the same time give the user the opportunity to schedule another alarm with a different mp3 file. (Its the prayer time alarm application)

 

[Erel]

You should use a local notification with a custom sound. The user will be able to start your app by clicking on the notification.

 

[db0070]

I have this code, and I run it on my iPhone in Release mode, at the schedule time I get the 'Notification arrived' message, but no sound - have I got my custom sound in the right place? My mp3 is less then 30 seconds and my mp3 is in Files\Special folder

Private Sub Application_Start (Nav As NavigationController)
    Salat_Times.LocManager.Initialize("LocManager")
    NavControl = Nav
   
    App.RegisterUserNotifications(True, True, True) 'request permission for notifications
    App.ApplicationIconBadgeNumber = 0
    'check whether the app was started from a notification
    If App.LaunchOptions.IsInitialized Then
        Dim ln As Notification = App.LaunchOptions.Get("UIApplicationLaunchOptionsLocalNotificationKey")
        If ln.IsInitialized Then
           'did not work   
           'Dim no As NativeObject = ln  - did not work
           ' no.SetField("soundName", "adhan0.mp3")
            hd.ToastMessageShow("Application was started from a notification: " & ln.AlertBody, True)
        End If
    End If
    ge.Initialize("ge")
    Salat_Times.ShowSalat(False)
End Sub

Sub btnNotification (alarmTime As Long)
    Dim ln As Notification
    ln.Initialize(alarmTime) 'alarmTime seconds from now
   
    Dim no As NativeObject = ln
    no.SetField("soundName", "adhan0.mp3")

    ln.IconBadgeNumber = 1
    ln.AlertBody = "Adhan Alarm"
    ln.PlaySound = True
    ln.Register
    Log("Notification will fire in " & alarmTime & " seconds.")
End Sub

Sub Application_ReceiveLocalNotification (LN As Notification)
    'this event will fire if the scheduled notification happend when the app was running
 
    hd.ToastMessageShow("Notification arrived: " & LN.AlertBody,True)
End Sub

 

[Erel]

Make sure that the file name case is correct (not Adhan0.mp3)

 

[db0070]

In fact, the code does work .... I note that when the app is in the foreground the notification is fired but no sound is played. When I swipe app off, then the sound is played, and it is muted as soon as I open the app. Is that normal behaviour for an ios app?

 

[Erel]

When I swipe app off

Don't do it. It can prevent notifications from showing.

The notification is not showed at all when the app is in the foreground. You can play it yourself in ReceiveLocalNotification.